Waldron, who struggled with injuries throughout last season, had been dealing with the recent infection that required surgical intervention. The right-hander made only one start in June before finishing the season in Triple-A following an oblique issue during spring training.
Padres' Waldron Has Surgery for Rear Infection

San Diego Padres pitcher Matt Waldron underwent surgery for an infection in his rear end, the team announced Thursday. The 29-year-old knuckleballer has faced multiple injuries in recent months.